bd3010afv-m ROHM Co. Ltd., bd3010afv-m Datasheet
bd3010afv-m
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bd3010afv-m Summary of contents
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... BD3010AFV-M ●Description BD3010AFV regulator IC with integrated WDT (Watch Dog Timer), high output voltage accuracy ±2.0% and 80µA (Typ.) low circuit current consumption. BD3010AFV-M supports usage of low ESR ceramic capacitor for output stability. Also integrated is an automatic WDT ON/OFF feature using output current detection and an output clamping circuit to prevent output overshoot caused by current flow ...
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... BD3010AFV-M ●Absolute Maximum Ratings (Ta=25℃) Parameter Supply voltage VADJ set pin voltage Regulator output pin voltage INH pin voltage Reset output pin voltage Watchdog input pin voltage Watchdog time set pin voltage Watchdog operation current set pin voltage Power dissipation Operating temperature range ...
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... BD3010AFV-M ●Electrical characteristics(Unless otherwise specified, Ta=-40 ~ +125℃, Vcc=13.5V, INH=5V, CLK=GND, Io=0mA) Parameter [Entire Device] Circuit current 1 Circuit current 2 [Regulator] Output voltage Line regulation Load regulation Dropout voltage Ripple rejection WADJ mirror current ratio Output voltage clamp (Comparator) [Reset] Detection voltage Hysteresis width Output delay time L→ ...
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... BD3010AFV-M ●Reference Data (Unless otherwise specified, Ta=25℃, Vcc=13.5V, INH=5V, CLK=GND, Io=0mA) 180 150 Ta=125℃ 120 90 60 Ta=25℃ Ta=-40℃ SUPPLY VOLTAGE: Vcc [V] Fig.1 Circuit Current Ta=25℃ Ta=125℃ Ta=-40℃ 100 200 300 ...
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... BD3010AFV-M ●Reference Data (Unless otherwise specified, Ta=25℃, Vcc=13.5V, INH=5V, CLK=GND, Io=0mA Ta=125 ℃ 1 Ta=25 ℃ Ta=-40 ℃ OUTPUT VOLTAGE: OUT [V] Fig.9 Voltage detection (RADJ=Open Watch time Reset time - 120 AMBIENT TEMPERATURE: Ta [℃] Fig.12 WDT Time vs. Temperature (CT=0. 01µ ...
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... BD3010AFV-M ●Measurement Circuit for Electrical Data OUT Vcc N.C OUT GND GND GND GND GND GND GND GND GND GND A WADJ CLK RADJ INH Measurement Circuit of Fig.1 and Fig.2 V OUT Vcc N.C OUT GND GND GND GND GND GND GND GND GND ...
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... BD3010AFV-M ●Block Diagram Vcc OCP PREREG N.C. GND GND GND GND GND Edge CLK VREF_R ON/OFF INH Circuit CT Pin No. Pin Name 1 Vcc Power supply Pin 2 N.C. 3 GND 4 GND 5 GND GND 6 GND 7 GND 8 CLK Clock input from microcontroller 9 INH WDT ON/OFF function pin ...
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... BD3010AFV-M ●I/O Equivalent Circuits (Resistance value is Typ. value) <Regulator> Vcc Vcc IC CLK CLK 10kΩ <Reset> Ro OUT 470kΩ 1kΩ RADJ OUT OUT 815 kΩ RADJ 100Ω 1kΩ 330 kΩ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. OUT OUT ...
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... BD3010AFV-M ●Detection Voltage Adjustment (Resistance Value is TYP. value) OUT OUT R4 R2=815k Ω RADJ 100 Ω R3 R1=330k Ω IC Internal Block Diagram When typical detection voltage is 4.25V Vdet ≒ RADJ × (R1+R2 ・Vdet : Reset detection voltage : Internal reference voltage (MOS input) ・RADJ ・R1, internal resistor (Voltage detection precision is tightened up to ±3% by laser-trimming the R1 and R2) RADJ will fluctuate 1.23V± ...
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... BD3010AFV-M ●WDT Voltage Detection (Resistance Value is TYP. value) PowTr － + 140k Ω LOW WDT ON － + HIGH WDT OFF IC Internal Block Diagram ※If the OUT-WADJ resistance value is not same as the condition on the electrical characteristics table, i.e., 5KΩ, choose the resistance value in ratio referring to the above equation. ...
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... BD3010AFV-M ●Power ON Reset Power ON reset (output delay time) is adjustable by CT pin capacitor. TdLH(S) ≒(1.15V×CT capacitance(µF) / Ictc(µA)(TYP.) : Output delay time( power ON reset) ・TdLH : Upper switching threshold voltage(TYP.) ・1.15V ・CT capacitance : Capacitor connected to CT pin : WDT charge current ・ ...
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... BD3010AFV-M ●Watchdog Timer Watch Dog Timer ( WDT watch time, reset time) is adjustable by the CT pin capacitor TWH(S) ≒(1.00V×CT capacitance (µF))/Ictd(µA) TWL(S) ≒(1.00V×CT capacitance (µF))/Ictc(µA) : WDT watch time (delay time to turn the reset ON) ・TWH ・TWL ...
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... BD3010AFV-M ●WDT timer ON/OFF switch INH (Resistance value is Typ. value) BD3010AFV-M has a switch INH to turn the WDT ON/OFF LOW WDT ON INH HIGH 10kΩ 300kΩ WDT OFF IC Internal Block Diagram By using INH ON, CT potential can be pulled up to internal voltage VREF_R (invalid with power ON reset) ＜ ...
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... BD3010AFV-M ●Forced Watch Mode By detecting an input voltage (battery voltage) called output SAT detection, WDT can be forced to be operated. Vcc 8750kΩ + － 2500kΩ VREF 64kΩ IC Internal Block Diagram ＜Timing Chart including Forced Watch Mode＞ ※No CLK signal Input ...
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... BD3010AFV-M ＜Timing Chart including Forced Watch Mode＞ ※With CLK signal Input 5V Vcc 3V 4.32V OUT 0V INH 0V 1.25V 1.15V CT 0.15V 0V CLK 0V Power on reset OUT Ro Reset “L” Vcc 3V 4.32V OUT 0V INH 0V 1.25V 1.15V 0.15V CT 0V CLK 0V Power on reset OUT Voltage Ro Reset “ ...
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... BD3010AFV-M ＜Entire Timing Chart＞ Forced watch mode 13.5V Vcc 5. OUT 0V INH 5V 0V 1.25V 1.15V CT 0.15V 0V CLK 0V Power on reset OUT Voltage Minimum reset Ro Movement 0V voltage Stand-by mode Reset on IoA Io 5mA 0mA www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4.32V VHS 70mV 4 ...
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... BD3010AFV-M ●Thermal Dissipation Curve ROHM standard board Board size:70mm×70mm×1.6mm 3.0 θja=100(℃/W) 2.0 ① 1.25W 1.0 0 100 125 Ambient Temperature: Ta [℃] Fig.19 ※Reduced by 10.0mW/℃ over Ta=25℃, when mounted on 70mm×70mm×1.6mm glass epoxy board Refer to Fig. thermal dissipation characteristics for usage above Ta=25℃. The IC’s characteristics are affected heavily by the temperature, and if is exceeds its max junction temperature (Tjmax), the chip may degrade or destruct ...
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... BD3010AFV-M ●Pin Settings / Precautions 1. Vcc pin Insert a 0.33 ~ 1000µF capacitor between the Vcc and GND pins. The appropriate capacitance value varies by application. Be sure to allow a sufficient margin for input voltage levels. 2. Output pins It is necessary to place capacitors between each output pin and GND to prevent oscillation on the output. Usable capacitance values range from 0.1µ ...
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... BD3010AFV-M ●Notes for use 1. Absolute maximum ratings Use of the IC in excess of absolute maximum ratings (such as the input voltage or operating temperature range) may result in damage to the IC. Assumptions should not be made regarding the state of the IC (e.g., short mode or open mode) when such damage is suffered. If operational values are expected to exceed the maximum ratings for the device, consider adding protective circuitry (such as fuses) to eliminate the risk of damaging the IC ...
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... BD3010AFV-M 13. Applications or inspection processes where the potential of the Vcc pin or other pins may be reversed from their normal state may cause damage to the IC's internal circuitry or elements. Use an output pin capacitance of 1000µF or lower in case Vcc is shorted with the GND pin while the external capacitor is charged. Insert a diode in series with Vcc to prevent reverse current flow, or insert bypass diodes between Vcc and each pin ...
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... BD3010AFV-M ●Ordering part number Part No. Part No. SSOP-B20 6.5 ± 0 0.1 0.65 0.22 ± 0.1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package FV: SSOP-B20 <Tape and Reel information> Tape Embossed carrier tape Quantity 2500pcs E2 Direction The direction is the 1pin of product is at the upper left when you hold ...
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